| Effect of Euphorbia supine Raf. invasion on potato PSⅡ fluorescence characteristics and absorbed light energy allocation |
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| DOI：10.7606/j.issn.1000-7601.2011.05.11 |
| Key Words: potato Euphorbia maculata invasion PSⅡ chlorophyll fluorescence absorbed light energy allocation |
| Author Name | Affiliation | | WANG Fang | Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | MA Tingrui | Gansu Agricultural University, Key Lab of Crop Improvement ＆ Germplasm Enhancement, Lanzhou, Gansu 730070, China | | LIU Yongqiang | Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | LIANG Huiguang | Gansu Agricultural University, Key Lab of Crop Improvement ＆ Germplasm Enhancement, Lanzhou, Gansu 730070, China | | LI Zhang | Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China |
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| Abstract: |
| By control with the normal conditions, an experiment was carried out to study the influence of Euphorbia maculata invasion on potato leaves' photosynthestic pigment content, PSⅡ fluorescence characteristics and absorbed light energy allocation. The results show that Euphorbia maculata invasion decreases potato leaves' ALA content, chlorophyll-a content, chlorophyll-b content, Fv/Fm, Fv'/Fm', ΦPSⅡ, ETR, qP and Pc on different extent, but increases NPQ and Hd，while changes little Ex at different growth stages. The influence of Euphorbia maculata invasion on potato leaves' chlorophyll characteristics, PSⅡ chlorophyll fluorescence activity and absorbed light energy allocation is relevant with potato's growth stage, and the influence range increases with the push of growth stage. Euphorbia maculata invasion does not break the law that the PSⅡ fluorescence varies with the change of growth stages. |
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